Their name sounds like the punchline to a dumb joke: what do you call Sly and the Family Stone without Sly Stone? Yet the Family Stone boasts three founding members, including saxophonist Jerry Martini, the catalyst for their formation back in hippy San Francisco.

Most importantly, as they tread the fine line between tribute act and pop survivors, they have a fabulous repertoire from a golden era of psychedelic soul, including Stand, Dance to the Music and Everyday People. They were a great live band of their time, making a memorable appearance at Woodstock in 1969.

Although it can seem odd to see rock legends in a jazz club, it makes sense in the Family Stone's case: their jigsaw funk had a profound effect on the nascent jazz-rock movement. Herbie Hancock named a tune Sly, and founder member Greg Errico briefly played drums for Weather Report.

The third founder here is trumpeter Cynthia Robinson, who with Martini makes one of the most instantly recognisable horn section sounds in pop. While the charismatic Alex Davis channels the spirit of Sly on vocals and keyboard, and Errico's drumming is as tough as it was on the recordings, it's those catchy, brittle fanfares that make the Family Stone authentic.